CMT-DC1K, HCD-DC1K - Sony Audio Service Manual (repair manual)

Model
CMT-DC1K HCD-DC1K
Pages
47
Size
4.71 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-dc1k-hcd-dc1k.pdf
Date

View Sony CMT-DC1K / HCD-DC1K Service Manual online

SERVICE MANUAL
MICRO Hi-Fi COMPONENT SYSTEM
Korean Model
HCD-DC1K
Ver 1.1  2003.07
9-873-319-02
Sony Corporation
2003G05-1
Home Audio Company
C
 2003.07
Published by Sony Engineering Corporation
SPECIFICATIONS
HCD-DC1K is the Amplifier, CD player, Tape Deck
and Tuner section in CMT-DC1K.
Model Name Using Similar Mechanism
HCD-CP100K
CD Mechanism Type
CDM55F-K6BD41A
Base Unit Name
BU-K6BD41A
Optical Pick-up Block Name
KSM-213DCP
Optical Pick-up Name
KSS-213D
Model Name Using Similar Mechanism
HCD-CP100K
CD
Section
Tape deck
Section
Amplifier section
The following measured at 230 V AC, 60 Hz
DIN power output (rated): 27 + 27 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
32 + 32 W
(6 ohms at 1 kHz, 10%
THD)
The following measured at 220 V AC, 60 Hz
DIN power output (rated): 23 + 23 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
26 + 26 W
(6 ohms at 1 kHz, 10%
THD)
Inputs
AUDIO IN MD (VIDEO) (phono jacks):
Sensitivity 500/250 mV,
impedance 47 kilohms
Outputs
OPTICAL DIGITAL OUT (CD):
Optical
PHONES (stereo minijack):
Accepts headphones with
an impedance of  8 ohms
or more
SPEAKER:
Passive speaker system,
6 ohms
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
λ
 = 780 nm)
Emission
duration: continuous
Wavelength
780 - 790 nm
Frequency response
2 Hz - 20 kHz (
±
0.5 dB)
Tape player section
Recording system
4-track 2-channel stereo
Frequency response
50 - 13,000 Hz (
±
3 dB),
using a Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 - 108.0 MHz
(50-kHz step)
Antenna
FM wire antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna
AM loop antenna, external
antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
220 V AC , 60 Hz 
Power consumption
See the nameplate
Dimensions (w/h/d)
Approx. 191 
×
 253 
×
346 mm incl. projecting
parts and controls
Mass
Approx. 5.6 kg
Design and specifications are subject to change
without notice.
2
HCD-DC1K
TABLE  OF  CONTENTS
1.
SERVICING  NOTES
...............................................
3
2.
GENERAL
Parts Identification ..........................................................
4
Setting the Time ..............................................................
4
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
6
3-2. Upper Cover Sub Assy ....................................................
7
3-3. CD Lid .............................................................................
7
3-4. Front Panel Section .........................................................
8
3-5. Tape Mechanism Deck ....................................................
8
3-6. CD Mechanism Deck (CDM55F-K6BD41A) ................
9
3-7. Base Unit (BU-K6BD41A) .............................................
9
3-8. Loading Motor Board ..................................................... 10
3-9. Cam (CDM55) ................................................................ 10
4.
TEST  MODE
.............................................................. 11
5.
ELECTRICAL  ADJUSTMENTS
Deck Section ................................................................... 12
CD Section ...................................................................... 13
6.
DIAGRAMS
6-1. Block Diagram  – CD SERVO Section – ....................... 15
6-2. Block Diagram  – MAIN Section – ................................ 16
6-3. Block Diagram
– DISPLAY/POWER SUPPLY Section – ...................... 17
6-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 18
6-5. Printed Wiring Board  – CD Board – ............................. 20
6-6. Schematic Diagram  – CD Board – ................................ 21
6-7. Printed Wiring Board  – TC Board – .............................. 22
6-8. Schematic Diagram  – TC Board – ................................. 23
6-9. Schematic Diagram   – MAIN Board (1/3) – ................. 24
6-10. Schematic Diagram  – MAIN (2/3)/
LOADING MOTOR/HEADPHONE Boards  – ............. 25
6-11. Schematic Diagram  – MAIN (3/3)/LCD Boards  – ...... 26
6-12. Printed Wiring Boards  – MAIN/LCD/
LOADING MOTOR/HEADPHONE Boards – .............. 27
6-13. Printed Wiring Boards
– SWITCH/I/O SWITCH Boards – ................................ 28
6-14. Schematic Diagram
– SWITCH/I/O SWITCH Boards – ................................ 29
6-15. Printed Wiring Board – POWER Board – ...................... 30
6-16. Schematic Diagram – POWER Board – ......................... 31
6-17. IC Pin Function Description ........................................... 32
7.
EXPLODED  VIEWS
7-1. Upper Cover, Tape Mech Deck Section ......................... 36
7-2. Front Panel Section ......................................................... 37
7-3. Chassis Section ............................................................... 38
7-4. CD Mechanism Deck (CDM55F-K6BD41A) ................ 39
7-5. Base Unit (BU-K6BD41A) ............................................. 40
8.
ELECTRICAL  PARTS  LIST
............................... 41
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED
LINE  WITH  MARK  
0
  ON  THE  SCHEMATIC  DIAGRAMS
AND  IN  THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE
OPERATION.  REPLACE  THESE  COMPONENTS  WITH
SONY  PARTS  WHOSE  PART  NUMBERS  APPEAR  AS
SHOWN  IN  THIS  MANUAL  OR  IN  SUPPLEMENTS  PUB-
LISHED  BY  SONY.
3
HCD-DC1K
SECTION  1
SERVICING  NOTES
The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
SERVICE POSTION
In checking the CD block, prepare jig (extension cable J-2501-
011-B).
Connect jig (extension cable J-2501-011-B)
to the MAIN board (CN101) and CD board (CN101). 
MAIN board
CD board 
4
HCD-DC1K
Parts Identification
The items are arranged in alphabetical order.
Refer to the pages indicated in parentheses () for details.
Main unit
CD cover qa (8, 18)
Shown open in the illustration
above.
CD SYNC 9 (13, 14)
CD .m/M> qg (8, 9,
14)
CD Z qf (8)
CD u qj (8, 9)
CD x qh (8, 9, 21)
DSG indicator qd (16)
FUNCTION 7 (8-10, 12-14, 18)
PHONES jack qs (18)
Remote sensor q;
TAPE PAUSE X 5 (12-14)
TAPE Y 2 (12-14)
TAPE m/M   4 (12)
TAPE x 3 (12-14, 21)
TUNER/BAND ql (10, 21)
VOLUME 8 (17)
BUTTON DESCRIPTIONS
@/1 (power) 1 (7, 10, 15, 17, 18)
Z 6 (12)
+/– qk (10, 11)
1 2
5
4
7
6
3
8
9
q;
qs
qf qd
qh qg
qj
qk
ql
qa
SECTION  2
GENERAL
• LOCATION  OF  CONTROLS
– Rear View –
– Front View –
2
1
3
4
5
6
1 AM ANTENNA terminals
2 FM ANTENNA jack or terminals
3 AUDIO IN MD (VIDEO) jacks
4 CD DIGITAL OUT OPTICAL connector
5 SPEAKER terminals
6 AC power cord
Setting the time
1
Turn on the system.
2
Press TIMER SET on the remote.
If you are setting the clock for the first time,
go to step 5.
3
Press 
.
/
>
 on the remote
repeatedly until “SET CLOCK” appears
in the display.
4
Press ENTER on the remote.
The hour indication flashes.
5
Press 
.
/
>
 on the remote
repeatedly to set the hour.
6
Press ENTER on the remote.
The minute indication flashes.
7
Press 
.
/
>
 on the remote
repeatedly to set the minute.
8
Press ENTER on the remote.
The clock will begin operating.
To reset the system clock
Start over from step 1.
This section is extracted from
instruction manual.

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